checkunique.js

来自「基于SSH (struts+spring+hibernate)框架设计的 C」· JavaScript 代码 · 共 39 行

	//此变量记录唯一约束
	var constraint = 'pass';
	//此变量记录 要检查的文本域 原来的值
	var originalValue = null;
	
	function checkUnique(vo,property,obj) {
		if(!obj.value) {
				notnullTip.style.display="block";			
			}else {
				notnullTip.style.display="none";			
		}　
	
		if(obj.value != originalValue) {
			if(!request) {
				createRequest();
			}		
			
			var url = "servlet/UniqueCheckServlet?vo="+ vo + "&property="+ property +"&value=" + obj.value;
			
	     	request.open("GET", url, true);
	     	request.onreadystatechange = showCheckResult;
	    	request.send(null);
   		}else {
   			uniqueTip.style.display="none";
   		}
    }
    
    	function showCheckResult() {	 
		if (request.readyState == 4) { 	
		　　 var tmp = request.responseText; 
			if(tmp != 'pass') {
				uniqueTip.style.display="block";
				constraint = 'fail';
			}else {
				uniqueTip.style.display="none";
				constraint = 'pass';
			}　 
		}
	}